On 20/06/2020 02:06, Robin Laing wrote:
> On 06/05/2020 22:26, Robin Laing wrote:
>> On 04/05/2020 15:48, Ed Greshko wrote:
>>> On 2020-05-05 01:15, Robin Laing wrote:
>>>> Hello
>>>>
>>>> I am trying to find out why kwin_x11 is using one core on my
>>>> machine at and showing 94 to 99% in top. It isn't consistent as
>>>> some times this doesn't occur. This is on F30.
>>>>
>>>> I set up another account on this machine for working at home and
>>>> switch between the users being logged in at the same time.
>>>>
>>>> User A and B KDE sessions are running. New user C was created for
>>>> work. I login user C and switch back to B or A and then one core
>>>> goes to 94 to 99% load on kwin_x11 for user C.
>>>>
>>>> If I go to a VT terminal session , the kwin_x11 load disappears so
>>>> it is related to both kwin sessions.
>>>>
>>>> If I use a tree listing, there is nothing listed under kwin-x11
>>>>
>>>> strace on the process provides
>>>>
>>>> ppoll([{fd=11, events=POLLIN}, {fd=9, events=POLLIN}, {fd=13,
>>>> events=POLLIN}, {fd=6, events=POLLIN}, {fd=5, events=POLLIN}], 5,
>>>> {tv_sec=0, tv_nsec=0}, NULL, 8) = 0 (Timeout)
>>>>
>>>> strace Summary of process calls.
>>>>
>>>> % time seconds usecs/call calls errors syscall
>>>> ------ ----------- ----------- --------- --------- ----------------
>>>> 100.00 0.713184 6 110466 ppoll
>>>> ------ ----------- ----------- --------- --------- ----------------
>>>> 100.00 0.713184 6 110466 total
>>>>
>>>> It does seem to be worse if I have any applications open such as
>>>> Firefox or LibreOffice.
>>>
>>> Do you know if this issue may have been coincidence with a kernel
>>> update? I had a similar issue, but
>>> didn't investigate, on F31 with a 5.5 kernel. The problem cleared
>>> up after upgrade to F32 and a 5.6
>>> kernel.
>>>
>>
>> I have had it for a few month now.
>>
>> Will test on a different computer and upgrade to F32. Had issues
>> with F31 and LUKS support between LUKS 1 and LUKS 2 so concerned
>> about upgrading.
>>
>> Robin
>
> Upgraded to F32.
>
> Was having issues with an already working account and decided to test
> removing the old config files. Now that I have done that, when I
> switch to a different user, I am now using a core at close to 100%.
> Never below 99.3%
>
>
> kwin_x11 at full process.
>
> It is something in the configuration files that affects this so it is
> related to some setting.
>
> Robin
> _______________________________________________
Just ran an strace on the kwin process and all I get are screens and
screens of this.
ppoll([{fd=29, events=POLLIN}, {fd=11, events=POLLIN}, {fd=7,
events=POLLIN}, {fd=5, events=POLLIN}], 4, {tv_sec=0, tv_nsec=0}, NULL,
8) = 0 (Timeout)
ppoll([{fd=29, events=POLLIN}, {fd=11, events=POLLIN}, {fd=7,
events=POLLIN}, {fd=5, events=POLLIN}], 4, {tv_sec=0, tv_nsec=0}, NULL,
8) = 0 (Timeout)
ppoll([{fd=29, events=POLLIN}, {fd=11, events=POLLIN}, {fd=7,
events=POLLIN}, {fd=5, events=POLLIN}], 4, {tv_sec=0, tv_nsec=0}, NULL,
8) = 0 (Timeout)
ppoll([{fd=29, events=POLLIN}, {fd=11, events=POLLIN}, {fd=7,
events=POLLIN}, {fd=5, events=POLLIN}], 4, {tv_sec=0, tv_nsec=0}, NULL,
8) = 0 (Timeout)
ppoll([{fd=29, events=POLLIN}, {fd=11, events=POLLIN}, {fd=7,
events=POLLIN}, {fd=5, events=POLLIN}], 4, {tv_sec=0, tv_nsec=0}, NULL,
8) = 0 (Timeout)
ppoll([{fd=29, events=POLLIN}, {fd=11, events=POLLIN}, {fd=7,
events=POLLIN}, {fd=5, events=POLLIN}], 4, {tv_sec=0, tv_nsec=0}, NULL,
8) = 0 (Timeout)
ppoll([{fd=29, events=POLLIN}, {fd=11, events=POLLIN}, {fd=7,
events=POLLIN}, {fd=5, events=POLLIN}], 4, {tv_sec=0, tv_nsec=0}, NULL,
8) = 0 (Timeout)
ppoll([{fd=29, events=POLLIN}, {fd=11, events=POLLIN}, {fd=7,
events=POLLIN}, {fd=5, events=POLLIN}], 4, {tv_sec=0, tv_nsec=0}, NULL,
8) = 0 (Timeout)
I guess it is a bug report time.
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I submitted a bug on this problem but I was doing some changes and
reconfigured my panel to auto hide and the processes were not using 99%
of a CPU when I went to the second account. This was the only setting I
changed.
It looks like that the panel is attempting to update something and is
having an issue.
Robin